Clathrate hydrate FTIR spectroscopy - infrared signatures, astrophysical significance
نویسندگان
چکیده
منابع مشابه
Spectroscopic signatures of halogens in clathrate hydrate cages. 1. Bromine.
We report the first UV-vis spectroscopic study of bromine molecules confined in clathrate hydrate cages. Bromine in its natural hydrate occupies 51262 and 51263 lattice cavities. Bromine also can be encapsulated into the larger 51264 cages of a type II hydrate formed mainly from tetrahydrofuran or dichloromethane and water. The visible spectra of the enclathrated halogen molecule retain the spe...
متن کاملSpectroscopic signatures of halogens in clathrate hydrate cages. 2. Iodine.
UV-vis and Raman spectroscopy were used to study iodine molecules trapped in sII clathrate hydrate structures stabilized by THF, CH(2)Cl(2), or CHCl(3). The spectra show that the environment for iodine inside the water cage is significantly less perturbed than either in aqueous solution or in amorphous water-ice. The resonance Raman progression of I(2) in THF clathrate hydrate can be observed u...
متن کاملIncorporation of ammonium fluoride into clathrate hydrate lattices and its significance in inhibiting hydrate formation.
The stability of hydrate frameworks is influenced by guest molecules capable of hydrogen bonding with surrounding water molecules. Four remarkable features from the ammonium fluoride incorporation into a crystalline hydrate matrix provide important information on the thermodynamic stability, formation kinetics, structural characteristics, and molecular behavior in clathrate hydrate systems.
متن کاملHydrate-phobic surfaces: fundamental studies in clathrate hydrate adhesion reduction.
Clathrate hydrate formation and subsequent plugging of deep-sea oil and gas pipelines represent a significant bottleneck for deep-sea oil and gas operations. Current methods for hydrate mitigation are expensive and energy intensive, comprising chemical, thermal, or flow management techniques. In this paper, we present an alternate approach of using functionalized coatings to reduce hydrate adhe...
متن کاملNMR/MRI study of clathrate hydrate mechanisms.
Clathrate hydrates are of great importance in many aspects. However, hydrate formation and dissociation mechanisms, essential to all hydrate applications, are still not well understood due to the limitations of experimental techniques capable of providing dynamic and structural information on a molecular level. NMR has been shown to be a powerful tool to noninvasively measure molecular level dy...
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ژورنال
عنوان ژورنال: BIO Web of Conferences
سال: 2014
ISSN: 2117-4458
DOI: 10.1051/bioconf/20140203005